Dynamic Reactive Power Control for Wind Power Plants Techwindgrid ’09 Grid Integration Seminar Madrid 20/21 April 2009 Ernst Camm Charles Edwards Ken Mattern Stephen Williams

©2009

www.sandc.com

Presentation Outline • Introduction to S&C Electric Company • Introduction to Dynamic Reactive Power Control for Wind Power Plants • Inverter Inverter--based Dynamic Compensators • Hybrid Reactive Power Compensators • Power Factor Control Using Hybrid Reactive Power Compensators • Harmonic Resonance And Harmonic Current Injection by WTGs • Summary

Introduction to S&C Electric Company • Established in 1911 • Employee Employee--owned company • Headquarters in Chicago, IL USA • 2,100 employees worldwide • Leading provider of products and services for electric power switching, protection, automation, power quality solutions, and engineering services

Introduction to S&C Electric Company • Manufacturing & engineering facilities in USA – – – –

Chicago, IL Franklin, WI Orlando, FL Alameda, CA

• S&C subsidiaries – – – – –

S&C Electric Canada Ltd S&C Mexicana, S. de R.L. de C.V. S&C Electric do Brasil Ltda S&C Electric (Suzhou) Co., Ltd S&C Electric Europe Ltd

Introduction to Dynamic Reactive Power Control for Wind Power Plants • Grid code reactive power requirements for wind power plants – Vary power factor to meet system operating conditions – Control voltage • Incentives for reactive power production/consumption – Bonus/penalty payments during different demand periods

Power Factor

Inducti ve

Capacit ive